[Elecraft] K3S In-Depth Review Coming Soon?

[jim]

Wayne,

Will any of the changes affect the audio from either front or back headphone
jacks, or is it only affect the speaker, both internal and any external?

Jim
W6AIM



.

-----Original Message-----
From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Wayne
Burdick
Sent: Tuesday, October 27, 2015 1:28 PM
To: Vic Rosenthal 4X6GP/K2VCO
Cc: elecraft at mailman.qth.net
Subject: Re: [Elecraft] K3S In-Depth Review Coming Soon?

We've made several changes to improve audio over years, and a K3S
incorporates all of them:

- K3:  improved 12VDC decoupling to the AF amp
- K3:  added a dual low-noise LPF to eliminate residual sampling noise
(mostly at 12 kHz)
- K3:  corrected DSP AGC algorithms, which were non-monotonic at some signal
levels
- K3S: redesigned AF output and driver stages for lower IMD

Taken together, these changes provide a low-distortion, essentially flat
audio passband. Most other modern transceivers use the same (or similar)
class-AB final AF amp devices that we use in the K3/K3S, so how it sounds
comes down to how RX EQ is set up, as well as the LO-CUT/HI-CUT (or
shift/width) settings.

73,
Wayne
N6KR



On Oct 27, 2015, at 1:10 PM, Vic Rosenthal 4X6GP/K2VCO <k2vco.vic at gmail.com>
wrote:

> Operators disagree about K3/K3S audio. 




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